SILVER-GREY PETREL. 
Tlialassoem glacialina Heine, Nomencl. Mus. Hein., p. 362, 1890. 
ThalasscBca tenuirostris Oustalet, Missn. Scient. Cap Horn, p. 162, 1891. 
Thalassceca {Priocella) glacialoides Saunders, Antarct. Manual, p. 236, 1901. 
Distribution. Australian and New Zealand seas (Antarctic Regions, North America). 
Adult male. Upper surface, including the mantle, back, wings, and tail blue-grey, becoming 
paler and inclining to white on the hind-neck ; bastard-wing dark grey, some of the 
feathers white on the inner webs ; primary-coverts dark grey with pale tips ; primary- 
quills dark grey with whitish tips, the greater portion of the inner webs white, 
inner primaries paler grey towards the base ; secondaries grey on the outer webs and 
white on the inner ones, the innermost secondaries like the back ; middle tail- 
feathers like the back ; the outer ones white on the inner webs, the outermost 
entirely white ; fore-part of head, sides of face, throat, and under surface of body 
pure white ; “ MaxUla and mandible tipped with black, the middle portion of the 
bill flesh-coloured, and the base and nares cobalt-blue. The feet are pale flesh-colour, 
the webs washed with yellow, and the claws black. The iris dark brown, and the 
pupil black.” (Dr. Pirie.) Total length 482 mm.; culmen 45, wing 340, tail 132, 
tarsus 49. 
Adult female. Similar to the adult male. 
Nest. At the end of a burrow in the sand (Nunn, Kerguelen Island). 
Egg. Unknown. 
Though, comparatively speaking, a somewhat common bird, no series are 
available from breeding-localities, and the observed differences cannot yet 
be correctly interpreted. 
The nomenclature of the species needs notice. In Vol. XIII. of Shaw’s 
Gen. Zool., p. 236, 1826, Stephens included the — 
Antarctic Fulmar. Fulmarus antarcticus. 
Fu. albus, dorso medio canescente, alis nigricantibus. 
White Fulmar with the back hoary in the middle, the wings dusky. 
Procellaria glacialis /?. Lath., Ind. Orn., 2. 823. 
Fulmar Petrel. Lath., Gen. Syn., 6. 405a. 
Latham says of this bird : “ Size of the last (the Northern Fulmar) ; beak 
black, stout and much curved at the end ; head, neck, body, and tail white, 
between the wings pale ash-colour ; the whole of the wing dusky-black ; legs 
dusky. Inhabits the Antarctic Ocean, pretty far to the south.” 
“ This appears to me to have sufficient character of discrimination to 
constitute a distinct species, exclusive of its locality ; and its black beak and 
deep brown wings well distinguish it from the preceding species.” 
It has been conceded by all ornithologists that this description pei^tains 
to the present bird, but Stephens’s name has been rejected on account of the 
prior Procellaria antarctica Gmelin. As these two are not congeneric, both 
specific names must be used. It should be noted that when Stephens proposed 
his Fulmarus antarcticus, he was fully aware of Gmehn’s species, which he 
placed in his new genus Daption (p. 242). 
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